Excellent upgrade for my VW Polo. I originally purchased the Gen5 LEDs, then exchanged them for these as the lamp driver is integrated into the lamp/heat-sink. If space is limited within the headlamp assembly, these (Gen4) LEDs are a better option than the GEN5 product . The light output is fantastic, a broad-spread on dipped beam that illuminates the verge much better than standard lamps. This is perfect on unlit roads with oncoming traffic and animal-hazards. Slight draw-back: the main-beam colour is a warmer white than the dipped-beam and you lose the wide spread of the dipped-beam (LEDs are either dipped or main, not dipped or dipped & main). On main-beam there is a long and narrow-beam of light that illuminates a long way ahead. Highly recommended.

These bulbs are fantastic on my Ford Mustang. Brilliant white light as standard and haven't used the sleeves to adjust the colour temperature. Well worth the money and just plug and play :)

These bulbs are fantastic on a Ford Mustang. Not having the best headlights in the world on a Mustang, it is a vast improvement and very bright indeed. Well worth the money.

Bought these H4 LED bulbs to replace very dim headlight bulbs on my Nissan Navara. Excellent light output, I can actually see the edges of the road on dip beam-a problem with the OEM bulbs. Easy to fit, just install the holder first, then the LED bulb just fits in via a bayonet type fitting. Worth the money for sure.

Bought these to replace H4 headlights on a tractor since all other worklamps had been converted to LED. I found the price to be high but justifiable as they seem to double the light output over the original halogens. Fitment was easy. Will be using these again in the future on another project! Would recommend.